Louis woelfle and adolf schoeller



' Patented Mar.7, I899. L. WOELFLE & A. SCHOELLEB.

FIREPBOOF FLOOR.

v (Application filed Feb. 9, 1898.) (No Model.)

UNITED STATES Fries.

PATENT LOUIS WVOELFLE AND ADOLF SCHOELLER, OF NEW YORK, N. Y.

FIREPROOF FLOOR.

SPECIFICATION forming part of Letters Patent No. 620,818, dated March '7, 1899.

' Application filed February 9,1898. Serial No. 669,647. (No model.)

To all whom it may concern:

Be itknown that we, LoUIs WonLrLE, residing in New York, in the borough of Brooklyn, and ADOLF SOHOELLER, residing in New York, in the borough of Manhattan, State of New York, citizens of the United States, have invented certain new and useful Improvements in Fireproof Floors, of which the followingis a specification.

This invention relates to fireproof floors; and the object of the same is to furnish a durable, substantial, and cheap structure for the fireproof floors of buildings which can be built up without any temporary support from below.

Our invention consists of certain features of construction and combinations of parts to be hereinafter described, and then particularly claimed.

In the accompanying drawings, Figure 1 is a perspective view of our improved fireproof floor, parts being broken away, and one of the beams being shown partly in full lines and partly in dotted lines, so as to disclose the ends of the tubes. Fig. 2 isatransverse section of the structure through two adjoining beams, partly in elevation. Fig. 3 is an enlarged detail transverse section showing the mannerin which the ceiling-plates are supported from the tubes.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, Arepresents the usual beams of a fireproof floor, upon the base-flanges of which ourimproved structure is supported.

B represents a series of round tubes, preferably of fire and water proofed fibrous material, placed transversely of the beams and supported at their ends upon the base-flanges thereof. The ends of the tubes are closed by solid plates and cut away, as shown at b, so

as to be supported upon the base-flanges of the beams without rolling or turning. These tubes 13 are placed transversely of the beams at suitable distances apart, as shown more clearly in Fig. 1, and around the same are passed suitable ties C, preferably of wire, the ends of which are twisted, as shown at C, while the intermediate portions of said ties pass through ceiling-plates D and through perforated washers or buttons d, arranged at the under sides of the ceiling-plates, whereby they are supported in position without tons and twisted around the body of the wires.

At the right of Fig. 3 the tie is shown as consisting of one piece of wire which passes from button to button and the ends of which are twisted at C. A suitable filling E,of concrete, cement, or similar material in plastic condition, is then run in onto the tubes B and into the space between the beams and up to or nearly up to a level with the upper flanges of the said beams. By reason of the tubes being round or circular in cross-section they are easy of manufacture, and when placed upon the beams with the filling material between them the said filling material is firmlyconnected with and secured to the tubes by reason of the lower portions of the filling material between the tubes being of greater width than the portions between the diameters of the tubes. After a time this filling hardens and the entire structure is thereby bound together and becomes permanent and furnishes a perfectly satisfactory and relia ble fireproof fioor for buildings, for the reason that the tubes, concrete filling, and ceiling-plates are firmly bound together, so as to form one rigid body that is capable of resisting the pressure exerted on the floor.

The floor is adapted for any length between the beams, the tubes being proportionately strengthened or reinforced for extra length.

Having thus described our invention, what we claim is The combination, with the beams, of tubes placed transversely of said beams and resting on the base-flanges thereof, ceiling-plates, wire ties passed through said ceiling-plates and over said tubes, and a suitable filling material placed over the tubes between the beams, substantially as set forth.

In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing witnesses.

LOUIS WOELFLE. ADOLF SCI-IOELLER.

Witnesses:

PAUL GoEPEL, GEO. W. JAEKEL. 

